California Code, Health and Safety Code - HSC § 25181

(a) If the department determines that a person has engaged in, is engaged in, or is about to engage in any acts or practices that constitute or will constitute a violation of this chapter, or any rule, regulation, permit, covenant, standard, requirement, or order issued, promulgated, or executed thereunder, and when requested by the department, the city attorney of the city in which those acts or practices occur, occurred, or will occur, the county counsel or the district attorney of the county in which those acts or practices occur, occurred, or will occur, or the Attorney General may apply to the superior court for an order enjoining those acts or practices, or for an order directing compliance, and upon a showing by the department that the person has engaged in or is about to engage in those acts or practices, a permanent or temporary injunction, restraining order, or other order may be granted.

(b) If the unified program agency determines that a person has engaged in, is engaged in, or is about to engage in any acts or practices which constitute or will constitute a violation of this chapter, or any rule, regulation, permit, covenant, standard, requirement, or order issued, promulgated, or executed thereunder, and when requested by the unified program agency, the city attorney of the city in which those acts or practices occur, occurred, or will occur, the county counsel or the district attorney of the county in which those acts or practices occur, occurred, or will occur, or the Attorney General, may apply to the superior court for an order enjoining those acts or practices, or for an order directing compliance, and upon a showing by the unified program agency that the person has engaged in or is about to engage in those acts or practices, a permanent or temporary injunction, restraining order, or other order may be granted.

(c) If a county counsel or the district attorney brings an action pursuant to subdivision (a) or (b), the county counsel or the district attorney shall, within seven days of the filing of the action, notify the district attorney or county counsel, as applicable, of the county in which the acts or practices occur, occurred, or will occur.